SQLServerCentral.com / SQL Server 2008 - General / SQL Server 2008 / Need to transpose some data - and not sure of the best way to do so - pivot table perhaps? / Latest PostsInstantForum.NET v99.99.99SQLServerCentral.comhttp://www.sqlservercentral.com/Forums/notifications@sqlservercentral.comFri, 09 Dec 2016 06:44:19 GMT20RE: Need to transpose some data - and not sure of the best way to do so - pivot table perhaps?http://www.sqlservercentral.com/Forums/Topic1383879-391-1.aspxThanks for the responses guys - both worked well! You guys rock!Tue, 13 Nov 2012 10:22:52 GMTsrobinson 596RE: Need to transpose some data - and not sure of the best way to do so - pivot table perhaps?http://www.sqlservercentral.com/Forums/Topic1383879-391-1.aspx[quote][b]srobinson 596 (11/12/2012)[/b][hr]So I have been reading up on pivot tables because I thought that was the direction I needed to go in. However - I am not aggregating any data. So let me first present my scenario - after that any insight would be appreciated. I am creating a report for items that have an id as well as a material description. An item can exist multiple times with different types of material. Also - an item can have no more than 5 materials. For example: item ID Material 337139 Ring-Band 337139 Ring-Artisan 337139 GOLD 337156 Acc-Tokens 337174 Ring-Gemstone 337174 Ring-Artisan 337174 SILVER 337183 Ring-Band 337183 MIXED METAL 337184 Earrings-Hoop 337184 MIXED METAL 337194 Earrings-Dangle 337194 SILVER What I am looking to do is invert the data - so an item would only show up once followed by up to 5 materials.item id Material 1 Material 2 Material 3 Material 4 Material 5337139 Ring-Band Ring-Band Ring-Artisan 337156 Acc-Tokens337174 Ring-Gemstone Ring-Artisan SILVER Is there a way to transpose this then? Any help would be appreciated. I have created some insert statements for the data:create table materials (item_id int, materials varchar(35))insert into materials values (337139,'Ring-Band'); insert into materials values (337139,'Ring-Artisan') ; insert into materials values (337139,'GOLD'); insert into materials values (337156,'Acc-Tokens'); insert into materials values (337174,'Ring-Gemstone'); insert into materials values (337174,'Ring-Artisan'); insert into materials values (337174,'SILVER'); insert into materials values (337183,'Ring-Band'); insert into materials values (337183,'MIXED METAL'); insert into materials values (337184,'Earrings-Hoop'); insert into materials values (337184,'MIXED METAL'); insert into materials values (337194,'Earrings-Dangle'); insert into materials values (337194,'SILVER');[/quote]Nicely done. I absolutely love it when someone takes the time to help me help them with readily consumable test data.The following code will do what you ask. Keep in mind that an aggregate can be an aggregate of just one element. ;-) It employs what CapnHector was talking about.[code="sql"]WITHcteEnumerateMaterials AS( SELECT item_id, materials, Material# = ROW_NUMBER() OVER (PARTITION BY item_id ORDER BY materials) FROM materials) SELECT [Item ID] = item_id, [Material 1] = MAX(CASE WHEN Material# = 1 THEN materials ELSE '' END), [Material 2] = MAX(CASE WHEN Material# = 2 THEN materials ELSE '' END), [Material 3] = MAX(CASE WHEN Material# = 3 THEN materials ELSE '' END), [Material 4] = MAX(CASE WHEN Material# = 4 THEN materials ELSE '' END), [Material 5] = MAX(CASE WHEN Material# = 5 THEN materials ELSE '' END) FROM cteEnumerateMaterials GROUP BY item_id;[/code]Mon, 12 Nov 2012 16:59:10 GMTJeff ModenRE: Need to transpose some data - and not sure of the best way to do so - pivot table perhaps?http://www.sqlservercentral.com/Forums/Topic1383879-391-1.aspxOne thing i do when i need something like these requirements is create a consistent uniquifier using something like ROW_NUMBER() and have the base of my pivot something like this:[code="sql"]SELECT ROW_NUMBER() OVER (PARTITION BY item_id ORDER BY (SELECT NULL)) as uniqifier, item_id, materials FROM materials[/code]Then i just take the MAX() for my row number for my pivot table "Aggregation".Mon, 12 Nov 2012 15:20:42 GMTCapnHectorNeed to transpose some data - and not sure of the best way to do so - pivot table perhaps?http://www.sqlservercentral.com/Forums/Topic1383879-391-1.aspxSo I have been reading up on pivot tables because I thought that was the direction I needed to go in. However - I am not aggregating any data. So let me first present my scenario - after that any insight would be appreciated. I am creating a report for items that have an id as well as a material description. An item can exist multiple times with different types of material. Also - an item can have no more than 5 materials. For example: item ID Material 337139 Ring-Band 337139 Ring-Artisan 337139 GOLD 337156 Acc-Tokens 337174 Ring-Gemstone 337174 Ring-Artisan 337174 SILVER 337183 Ring-Band 337183 MIXED METAL 337184 Earrings-Hoop 337184 MIXED METAL 337194 Earrings-Dangle 337194 SILVER What I am looking to do is invert the data - so an item would only show up once followed by up to 5 materials.item id Material 1 Material 2 Material 3 Material 4 Material 5337139 Ring-Band Ring-Band Ring-Artisan 337156 Acc-Tokens337174 Ring-Gemstone Ring-Artisan SILVER Is there a way to transpose this then? Any help would be appreciated. I have created some insert statements for the data:create table materials (item_id int, materials varchar(35))insert into materials values (337139,'Ring-Band'); insert into materials values (337139,'Ring-Artisan') ; insert into materials values (337139,'GOLD'); insert into materials values (337156,'Acc-Tokens'); insert into materials values (337174,'Ring-Gemstone'); insert into materials values (337174,'Ring-Artisan'); insert into materials values (337174,'SILVER'); insert into materials values (337183,'Ring-Band'); insert into materials values (337183,'MIXED METAL'); insert into materials values (337184,'Earrings-Hoop'); insert into materials values (337184,'MIXED METAL'); insert into materials values (337194,'Earrings-Dangle'); insert into materials values (337194,'SILVER');Mon, 12 Nov 2012 14:28:25 GMTsrobinson 596